Thbeshing-machine



UNITED sTATEs PATENT oEEioE..

S. E. OVIAT'I, OF RICHFIELD, OHIO.

THRESHING-MACHINE.

Specification of Letters Patent No. 32,309, dated May 14, 1861.

To all 'whom it may concern:

Be it known that l, S. E. OvrATT, of Richfield, in the county ofSummit and State of Ohio, have made certain new and useful Improvements in 'lhreshing-Machinesg and I do hereby declare that the following is a full and exact description of the same, reference being had to the accompanying drawings, in which like letters refer to like parts in the different views presented.

Figure 1 is a side view. Fig. 2 is a top view. Fig. 3 is a front view.

My improvements consist in the arrangement of a wire cloth diaphragm in combination with a revolving screen also `a hood, whereby the dust occasioned by the use of a threshing machine is carried ofl along with straw and chaff and away from those feeding and operating it, so that the operators of the machine can work free of dirt and dust, thereby preserving their health which is always more or less injured by the use of threshing` machines not having my improvements attached to them; also the draft of the separator is more readily and effectually controlled by my improvement than it can be without it.

The following is a description of my improvements.

A, Fig. 1, is the body of the machine in which the threshing apparatus common to all machines is placed. To the sides of the machine I attach two side pipes B B, Fig. 2, which connect with and terminate in the fan case J, which extends through and across the machine. The upper ends of the pipes are brought together at the mouth of the machine D, where they open and terminate in the flueV E, under the floor of which the threshing cylinder revolves. F, Figs. 2 and 3, being the driving pulley with section of shaft.

B B, Fig. 2, show the form, connection and relative position of the pipes to each other and to the mouth of the machine.

In my former improvement the side pipes B B were made to terminate in a cross pipe placed immediately back of the flue E, and connected to the :Hue-in front by openings made in the side of the pipe. In my present arrangement I dispense with the transverse pipe and continue the side pipes along to the front until they terminate as before indicated in the flue E, saving thereby considerable expense in the construction,"` of the apparatus r and rendering it -much more simple in character.

In my present arrangement, as in my former, the screen E', Fig. 3, is placed in the chamber or iiue E. This screen consists of several rods 0i' equivalents extending across the flue and their ends secured to the belts G G', the belts passing' over thepulleys I-I H, H H. The shafts also extend across the flue the lower one projecting over the side of the flue and connected by a belt to thepulley I, Fig. 2, on the shaft of the threshing cylinder and by which it is operated. Immediately in the rear of the revolving screen, above described, and filling the whole throat of the opening E, is placed a wire cloth diaphragm E, which is sufficiently line in its meshes to prevent chaff and other small bodies which may pass between the slats ofthe revolving screen from passing down into the pipes; but it should be observed that such small matters cannot be accumulated there, for the revolving screen will carry them around so that they are drawn into the threshing cylinder. The object of this screen is to prevent the chaff and straw from passing into the fllues and pipes when thrown up by the cylinder while in operation, thereby preventing the pipes from clogging and obstructing the draft, the screen revolving in the direction to convey the chaff and straw down toward the cylinder.

The draft or current of air for the purpose of conveying the dust through the side pipes is accomplished as before described in the former specification-viz., thecase J, Fig. l, is the revolving fan K, connected by pulleys and belts to the pulley F, Figs. 2 and 3, which in turn is connected by belting to the pulley I on the shaft of the threshing cylinder. The machine when in motion causes the fan to revolve by its several connections to the cylinder and thereby producing a strong current of air downward and from the mouth of the machine through the side pipes7 carrying along with it all the dirt and dust arising from the mouth of the machine while in operation, which under ordinary circumstances is very great; enveloping all those attending the machine in a thick cloud of dust and dirt and by taking more or less into the lungs by the act of breathing it be comes not only very unpleasant and dirty but extremely dangerous to the health, as

most of the dust raised while threshing is by the cylinder at the front ofthe machine near which the persons feeding and attending it are mostly employed. The dust as it arises from the cylinder is arrested by the current of air and drawn into the mouth of the flue E, thence downward through the side pipes B B into the fan case J, and from the case it is blown out by the fan to the tail end of the machine.

The inducting current of air caused by the great velocity of the fan draws the dirtand dust down and into the fan case, while the conducting current carries it onward to the end of the machine as before said, hence, it will be perceived that the persons using the machine with my improvements are in no way inconvenienced or injured by the dust and dirt, which is demonstrated by actual use.

By an apron or hood M, Fig. l, which may consist of any proper material being thrown over and attached to the rear end of the machine as shown in Fig. l, the elevating or conducting apron N, Figs. l, 2, is entirely inclos'ed with the exception of a space at the top O for the eXit of the chaff, dust and straw. cape of the dust into the barn and by the conducting current of air`before described is blown out at the opening O, which open- This covering prevents the esing, if thought best may be proj ectedr out of the building thereby all the straw, chaff, dust and dirt be expelled into the open air. Thus by my improvement the inconvenience and evil resulting from the dust and dirt in threshing are wholly removed' the dust being discharged from the machine with the straw and chaff as before said.

The apron N may be of any desired length, and used to convey the straw to the top of a stack, in which case I call it a stacker. In this way the dust is carried to so great an elevation, that in case the tail of the machine is to the Windward, the dust does not interfere with the workmen. It should also be remarked, that the flue E, is detachable, for the purpose of getting at the threshing cylinder.

Vhat I claim as my improvements and desire to secure by Letters Patent, is-

l. The wire cloth diaphragm, E, in combination with the revolving screen E and thresher, for the purpose set forth.-

2. The canvas covering or hood, M, in combination with the stacker, for the purpose specified.

S. E. OVIATT.

lVitnesses J. BRAINERD, WV. IFI. BURRIDGE. 

